题目内容
解方程.
|
X-
|
(1+
|
分析:(1)等式的两边同时减去
,然后等式的两边同时除以
即可;
(2)先计算X-
X=
X,然后等式的两边同时除以
即可;
(3)先计算1+
=
,然后等式的两边同时除以
即可.
| 1 |
| 2 |
| 1 |
| 4 |
(2)先计算X-
| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
(3)先计算1+
| 5 |
| 6 |
| 11 |
| 6 |
| 11 |
| 6 |
解答:解:
(1)
x+
=
,
x+
-
=
-
,
x=
,
x÷
=
÷
,
x=
;
(2)X-
X=15,
X=15,
X÷
=15÷
,
X=24;
(3)(1+
)X=
,
X=
,
X÷
=
÷
,
X=
.
(1)
| 1 |
| 4 |
| 1 |
| 2 |
| 3 |
| 5 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 10 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 10 |
| 1 |
| 4 |
x=
| 2 |
| 5 |
(2)X-
| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
X=24;
(3)(1+
| 5 |
| 6 |
| 11 |
| 20 |
| 11 |
| 6 |
| 11 |
| 20 |
| 11 |
| 6 |
| 11 |
| 6 |
| 11 |
| 20 |
| 11 |
| 6 |
X=
| 3 |
| 10 |
点评:本题主要考查解方程,然后根据等式的意义进行解答即可.
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